Lubricating-cup.



UNITED STATES Patented $111921, ib3.

PATENT OFFIC JOHN MILTON STAPP, OF ALAMOGORDO, TERRITORY OF NEW MEXICO,ASSIGNOR TO HIMSELF AND NEAL A. LA BEAUME, OF ALAMOGORDO,

TERRITORY OF NEW MEXICO.

LUBRlCA'l'lNG-CUP.

SPECIFICATION formingpart of LettersPatent No. 734,443, dated July 21,1903.

Application filed September 10,1902. Serial No. 122,818. (No model.)

T0 atZZ whom it may concern:

Be it known that I, J OHN MILTON STAPP, a citizen'of the United States,and a resident of Alamogordo, in the county of Otero and Territory ofNew Mexico, have invented a new and Improved Lubricating-Cup, of whichthe following is a full, clear, and exact description.

My invention relates to improvements in lubricating-cups; and theprimary object that I have in view is the provision of a'simple andcheap contrivance for use on revolving or oscillating parts of machineryfor the purpose of automatically feeding oil thereto when the part is inmotion, while the feed is efiectively cut off on the stoppage of thepart, thus overcoming thewaste of the lubricant.

A further object is to construct the parts in such a way as to enablethe use of a ballvalve, which when the cup moves with the moving part ofthe machine is capable of' a rotary motion, so that the valve sweeps OKthe seat any sediment which may have a tendency to adhere thereto, thuspreventing clogging of the oil-duct and insuring free passage of thelubricant.

A further object of the invention is to provide means which may beeasily and quickly removed from the oil-cup, so as to obtain access tothe journal or other part for supplying lubricant directly theretobefore starting the engine, as is frequently desired in cold weather,when the oil does not flow readily.-v

A further object is to increase the durability of the parts byminimizing the friction and wear thereon and also toprovide for adjustment of the movement of thevalve, so that a greater or less quantityof oil may pass to the part to be lubricated.

With these ends in view the invention consists of a lubricating-cupembodying novel features of construction and arrangement, which will behereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in both the figures.

I applied thereto, and Fig. 2 is a horizontal section taken in the planeof the dotted line 2 2 of Fig. 1.

An ordinary lubricating-cup is indicated at 5', the same having aninteriorly-threaded upper portion adapted for the reception of the malethreaded flange 7 of an ordinary screwcap 8, the latter havingan angularprojecting stud 9, to which may be applied a wrench or other implementfor the convenient adjustment of the cap. All these parts are ordinaryinthe art, and I do not consider it necessary to more particularlydescribe the same.

"As shown by Fig. 1, the bottom of the cup 5 is provided with a centralorifice 10, through which is adapted to pass a male-threaded ,cator tothe moving part of the machine.

The head 12 of the plug is provided with a central socket 13, which hasits bottom flared,

as at 14, and with this socket communicates a passage or duct 15, whichextends longitudinally through the plug 11, the lower end of saidduct'openin g through the lower extremity of the plug.

One of the important features of my improved device is a feed-tube 16,which is provided with a solid lower portion 17, the latter terminatingin a stud 18, which is integral with said solid portion. This stud isconstructed to fit snugly in the socket 13 of the headed plug, and thelower solid end of the feed-tube 16 is provided with a flat face adaptedto rest firmly upon the 'top face of the head 12. The tube 16 isprovided with a longitudinal passage 16", which terminates in a roundedor concave bottom face 16", adapted to serve as a seat for a sphericalvalve 19.. This valve is made of metal and turned to a truly sphericalform in order that it may fit accurately on the seat 16*. In the lowersolid part 17 of the tube is formed a longitudinal duct or passage 20,which extends through the stud 18 and opens through the valve-seat 16 inorder to communicate with the passage 16, whereby the lower part of thepassage 20 of the feed-tube is adapted to open directly into the passage15 of the plug 11. The outer or upper end of the feed-tube 16 is open,and near this open end the feed-tube is provided with a series of radialinlet-ports 21, the latter establishing communication between thechamber of the cup 5 and the passage 16 of the feed-tube.

The cap Sis provided on its under side with a boss 9, around which isfitted the upper end of a coiled spring 22. The lower end of the springbears against a collar 23 on a stem 24:, said stem having another collar25, ar.

ranged to extend into the upper open end of the feed-tube 16. The collar23 is of larger diameter than the collar 25, and said collar 23 affordsa seat for the spring 22, and it is also adapted to rest upon the topedge of the feed-tube 16, thereby limiting the inward projection of thestem 24 into the feed-tube. If desired, a metallic washer may be placedaround the boss 9 of the cap in order to afiord a seat for the spring;but the washer may be adjusted, as at 26, between the end of thefeed-tube and the lower side of the collar 23, thereby raising the stemwith relation to the valve 19. The lower end of this stem terminatesquite close to the valve in order to limit the movement of the same withrelation to the seat 16 but the play of the valve may be increased bythe employment of two or more of the washers 26 between the end of thetube and the collar 23 on the stem. The spring serves to yieldingly holdthe stem in proper relation to the valve, and the tension of this springmay be regulated by adjusting the cap 8 as desired.

The lubricator herein described may be easily and quickly applied to arotary or oscillating part of any kind of machine, and when this part isat rest the valve 19 occupies the seat 16*, so as to effectually cut offthe passage of oil through the ducts 2O 15 to the moving part, thuspreventing waste of the oil when the machine is at rest, and does notrequire lubrication. When the part is in motion, the lubricator travelswith it, and the oil finds its way from the cup through the ports 21into the passage 16 of the feed-tube. The motion of the part operates todisplace the valve and to impart a turning or rotary motion to saidvalve, thus permitting the lubricant to pass by the valve into thepassage 20 and through the passage 15 to the moving part. The motion ofthe valve 19 on its axis, due to the operation of the moving part of themachine, prevents any sediment from adhering to the valve-seat or theinterior of the feed-tube, because the valve is adapted to sweep anyadhering substance from the face of the valve-seat, thus insuring at alltimes the passage of the lubricant and overcoming any tendency of theparts to become clogged and rendered inoperative.

It will be noted that the feed-tube 16 is clamped between the plug 11and the shouldered stem by the action of the spring. This is animportant feature of my invention, because the stem is not attached bythreads or other parts to the inside of the cup. The cap 8 can be easilydismounted, and the feed-tube, with the valve 19, the stem, and thespring, can be readily removed from the chamber of the cup, whereby theengineer can easily obtain access to the passage 15 for the purpose ofsupplying lubricant to the moving part before starting the engine, suchlubrication of the machine when it is at rest being particularlydesirable in cold weather.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A lubricator having a cup, a removable covertherefor, a removable feed-tube seated in the cup, clamping devicesdisposed between the cover and the feed-tube and confining the feed-tubeunder endwise pressure between the cup and the cover, and a valve insaid feed-tube.

2. A lubricator having a cup, a removable cover therefor, a feed-tubestepped removably on the bottom part of the cup, a valve within saidfeed-tube, and spring clamping devices interposed between the cover andthe feed-tube and holding the latter under endwise pressure within saidcup.

3. A lubricator having a cup, a feed-tube within the cup provided withan interior valve-seat and near its upper end with inlet ports, a stemseated against the end of said feed-tube and projecting into the same, avalve within said feed-tube, and a spring seated against the stem and apart of the cup.

4. A lubricator having a cup, a headed and perforated plug fitted to anopening in the base of the cup, a feed-tube detachably fitted on saidplug and provided With a valve-seat and with ports located near theupper end thereof, a shouldered stem seated on the tube and projectinginto the same, a ball-valve within the said tube, and a spring seated onthe shouldered stem and against a part of the cup.

5. A lubricatorhaving a cup provided with a removable cover, a feed-tubemounted removably within said cup and having an internal valve-seat, ashouldered stem fitted to the upper end of the tube, a spring seatedagainst the stem and against the cover of the cup, a washer arranged todetermine the longitudinal position of the stem, and a valve Within thetube.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN MILTON STAPP.

WVitnesses:

FRED E. BARBER, J. W. MASON.

IIO

